/*
 * Copyright 2024 LinQingYing. and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * The use of this source code is governed by the Apache License 2.0,
 * which allows users to freely use, modify, and distribute the code,
 * provided they adhere to the terms of the license.
 *
 * The software is provided "as-is", and the authors are not responsible for
 * any damages or issues arising from its use.
 *
 */

package com.linqingying.cangjie.ide.completion.smart

import com.linqingying.cangjie.ide.completion.shortenReferences
import com.intellij.codeInsight.completion.InsertHandler
import com.intellij.codeInsight.completion.InsertionContext
import com.intellij.codeInsight.lookup.LookupElement

class ArtificialElementInsertHandler(
    private val textBeforeCaret: String,
    private val textAfterCaret: String,
    private val shortenRefs: Boolean
) : InsertHandler<LookupElement> {
    override fun handleInsert(context: InsertionContext, item: LookupElement) {
        val offset = context.editor.caretModel.offset
        val startOffset = offset - item.lookupString.length
        context.document.deleteString(startOffset, offset) // delete inserted lookup string
        context.document.insertString(startOffset, textBeforeCaret + textAfterCaret)
        context.editor.caretModel.moveToOffset(startOffset + textBeforeCaret.length)

        if (shortenRefs) {
            shortenReferences(context, startOffset, startOffset + textBeforeCaret.length + textAfterCaret.length)
        }
    }
}




